Premium
INORGANIC SOIL PHOSPHORUS
Author(s) -
WEBBER M. D.,
MATTINGLY G. E. G.
Publication year - 1970
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1970.tb01159.x
Subject(s) - octacalcium phosphate , monocalcium phosphate , chemistry , calcareous , solubility , lime , phosphate , phosphorus , soil water , calcareous soils , environmental chemistry , inorganic chemistry , mineralogy , soil science , geology , metallurgy , materials science , paleontology , organic chemistry , fishery , fish <actinopterygii> , fish meal , biology
Summary Mixtures of Woburn (non‐calcareous) and Barnfield (calcareous) soils, with and without added monocalcium phosphate, and of Woburn soil with added CaCO 3 , were stored moist in an incubator at 25 ± 2 °C. Equilibrium phosphate concentrations in 0·01M CaCl 2 and pH were measured on moist soils and mono‐calcium phosphate (½pCa+pH 2 PO 4 ) and lime (pH–½pCa) potentials were calculated at intervals up to 670 days. Most of the mixtures remained under‐saturated with respect to CaCO 3 ; values of ½pCa+pH 2 PO 4 and pH–½pCa changed during storage but remained close to the solubility isotherm for octacalcium phosphate (OCP). Mixtures which reached equilibrium with CaCO, remained undersaturated with respect to OCP.